Physics Lesson 3.7.5 - Gravitational acceleration

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Welcome to our Physics lesson on Gravitational acceleration, this is the fifth lesson of our suite of physics lessons covering the topic of The Meaning of Acceleration. Constant and Non-Constant Acceleration. Gravitational Acceleration, you can find links to the other lessons within this tutorial and access additional physics learning resources below this lesson.

Gravitational acceleration

It is a known fact that Earth causes an attraction effect on objects near its surface. This attraction effect causes a downward acceleration as object move faster and faster as they approach the Earth surface. If we neglect the opposing effect of air (air resistance), we consider this acceleration as constant. It is known as the "gravitational acceleration" or the "acceleration of free fall." It is denoted by g and has a value 9.81 m/s2 near the Earth surface. When moving away from the Earth surface, the value of gravitational acceleration decreases as the Earth's attraction weakens. However, most of the events in our interest occur near the Earth surface, so we will get the value of gravitational acceleration as (+ 9.81) m/s2 when falling down and (- 9.81) m/s2 when moving up (as the Earth attraction in this case opposes the motion and as a result, the object slows down).

You have reach the end of Physics lesson 3.7.5 Gravitational acceleration. There are 5 lessons in this physics tutorial covering The Meaning of Acceleration. Constant and Non-Constant Acceleration. Gravitational Acceleration, you can access all the lessons from this tutorial below.

More The Meaning of Acceleration. Constant and Non-Constant Acceleration. Gravitational Acceleration Lessons and Learning Resources

Kinematics Learning Material
Tutorial IDPhysics Tutorial TitleTutorialVideo
Tutorial
Revision
Notes
Revision
Questions
3.7The Meaning of Acceleration. Constant and Non-Constant Acceleration. Gravitational Acceleration
Lesson IDPhysics Lesson TitleLessonVideo
Lesson
3.7.1The meaning of Motion Maps
3.7.2The meaning of Acceleration
3.7.3Constant and non-constant acceleration
3.7.4Average and Instantaneous Acceleration
3.7.5Gravitational acceleration

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